1666065224 has 16 divisors (see below), whose sum is σ = 3125680620. Its totient is φ = 832550400.

The previous prime is 1666065211. The next prime is 1666065227. The reversal of 1666065224 is 4225606661.

It can be written as a sum of positive squares in 2 ways, for example, as 1228502500 + 437562724 = 35050^2 + 20918^2 .

It is not an unprimeable number, because it can be changed into a prime (1666065227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45377 + ... + 73424.

Almost surely, 2^1666065224 is an apocalyptic number.

It is an amenable number.

1666065224 is a deficient number, since it is larger than the sum of its proper divisors (1459615396).

1666065224 is a wasteful number, since it uses less digits than its factorization.

1666065224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120560 (or 120556 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 1666065224 is about 40817.4622435055. The cubic root of 1666065224 is about 1185.4884665117.

The spelling of 1666065224 in words is "one billion, six hundred sixty-six million, sixty-five thousand, two hundred twenty-four".